Evaluation of Space Radiation Doses Received Within a Typical Spacecraft
An analysis of radiation levels that may be expected from the natural radiation environment is presented for (1) primary solar flare protons and protons contained in the inner Van Allen belt; (2) secondary radiation such as neutrons from (p,xn) nuclear reactions, gamma rays from (p,x gamma ) nuclear reactions, and protons from (p,xp') nuclear reactions; and (3) electrons and electron-produced bremsstrahlung. The proton, neutron, and bremsstrahlung energy spectra and radiation doses are evaluated within aluminum spherical shells of various thicknesses for models of the proton fluxes from the May 10, 1959 and February 23, 1956 solar flares and protons contained in the inner Van Allen belt, as well as for models of the electron fluxes contained in the inner and outer Van Allen belts. Finally, these radiation quantities are evaluated within a typical spacecraft, considering its detailed material and equipment layout. (auth)
- Research Organization:
- Martin-Marietta Corp., Baltimore
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-005646
- OSTI ID:
- 4768688
- Journal Information:
- ARS Journal, Journal Name: ARS Journal Journal Issue: 11 Vol. 32; ISSN 1936-9972
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
BACKGROUND
BREMSSTRAHLUNG
COSMIC RADIATION
ELECTRONIC EQUIPMENT
ELECTRONS
GAMMA RADIATION
LABORATORY EQUIPMENT
NEUTRONS
RADIATION BELTS
RADIATION DOSES
SATELLITES
SPACE
SPACE APPLICATIONS AND TECHNOLOGY
SPACE VEHICLES
SPECTRA
SPHERES
SUN
SURFACES
THERMONUCLEAR REACTIONS
THICKNESS
VAN ALLEN BELTS